<template>
  <div>
    <h2>随机点名</h2>
    <div class="box">
      <span>名字是：</span>
      <div class="qs" v-text='name'>这里显示姓名</div>
    </div>
    <div class="btns">
      <button class="start" @click="fn">开始</button>
      <button class="end" @click="fn1">结束</button>
    </div>
  </div>
</template>

<script>
export default {
  data(){
    return {
      peoples:['刘备','关羽','张飞','赵云','马超','黄忠'],
      name:'这里显示姓名',
      id:''
    }
  },
  methods:{
    fn(){
      this.id = setInterval(() => {
        const index = Math.floor(Math.random()*this.peoples.length)
        this.name = this.peoples[index]
      },50)
    },
    fn1(){
      clearInterval(this.id)
    }
  }
  
};
</script>

<style>
* {
  margin: 0;
  padding: 0;
}

h2 {
  text-align: center;
}

.box {
  width: 600px;
  margin: 50px auto;
  display: flex;
  font-size: 25px;
  line-height: 40px;
}

.qs {
  width: 450px;
  height: 40px;
  color: red;
}

.btns {
  text-align: center;
}

.btns button {
  width: 120px;
  height: 35px;
  margin: 0 50px;
}
</style>